I guess 30 amps is enough. Not sure about my 5000 mah 6 cell lipo though. I sure hate trying to connect the deans plugs. BIG spark and somebody told me you had to change them about each 100 connects due to pitting, corrosion, etc. How about the lamp in the switch? What battery is it running off of, the big one? In my case that means 25.3 volts unless I wire it differently so the light runs off the ultimate BEC.